Add licensing metadata in images uploaded from reports

[epou]

CC BY 4.0 Deed (https://creativecommons.org/licenses/by/4.0/)

Using EXIF and/or IPTC metadata.

Using exiftool:

from PIL import Image

def add_metadata(image_path, metadata):
    img = Image.open(image_path)
    
    # Convert metadata dictionary to a string
    metadata_string = "\n".join([f"{key}: {value}" for key, value in metadata.items()])
    
    # Add metadata to the image
    img.info["metadata"] = metadata_string
    
    # Save the image with the new metadata
    img.save("output_image.jpg")

# Example usage
image_path = "input_image.jpg"
metadata = {
    "Title": "Your Image Title",
    "Artist": "Your Name",
    "License": "CC BY 4.0 - https://creativecommons.org/licenses/by/4.0/",
    # Add other relevant metadata fields
}

add_metadata(image_path, metadata)

Using piexif:

import piexif
from PIL import Image

def add_copyright_to_exif(input_image_path, output_image_path, copyright_text):
    # Open the image using Pillow (PIL)
    image = Image.open(input_image_path)

    # Get the Exif data from the image
    exif_dict = piexif.load(image.info["exif"])

    # Set the copyright information in the Exif data
    exif_dict["0th"][piexif.ImageIFD.Artist] = copyright_text

    # Save the modified Exif data back to the image
    exif_bytes = piexif.dump(exif_dict)
    image.save(output_image_path, exif=exif_bytes)

# Example usage
input_image_path = "input.jpg"
output_image_path = "output.jpg"
copyright_text = "Your Copyright Text Here"
add_copyright_to_exif(input_image_path, output_image_path, copyright_text)

Using iptcinfo3:

from PIL import Image
import iptcinfo3

def add_iptc_metadata(image_path, metadata):
    # Open the image
    img = Image.open(image_path)

    # Open the IPTC info
    info = iptcinfo3.IPTCInfo(image_path, force=True)

    # Update the IPTC info with metadata
    for key, value in metadata.items():
        info[key] = value

    # Save the IPTC info back to the image
    info.save_as(image_path)

# Example usage
image_path = "your_image.jpg"
metadata = {
    (2, 5): "Your Image Title",
    (2, 80): "Your Name",
    (2, 116): "CC BY 4.0 - https://creativecommons.org/licenses/by/4.0/",
    # Add other relevant IPTC metadata fields
}

add_iptc_metadata(image_path, metadata)

In Django would look like:

class YourImageModel(models.Model):
    image = models.ImageField(upload_to='your_image_directory')

    def add_iptc_metadata(self, metadata):
        # Open the image
        # Open the IPTC info
        # Update the IPTC info with metadata
         # Save the IPTC info back to the image
  
# Example usage in a Django view
def upload_image(request):
    if request.method == 'POST':
        form = YourImageForm(request.POST, request.FILES)
        if form.is_valid():
            # Save the image
            image_instance = form.save()

            # Add IPTC metadata to the image
            metadata = {
                (2, 5): "Your Image Title",
                (2, 80): "Your Name",
                (2, 116): "CC BY 4.0 - https://creativecommons.org/licenses/by/4.0/",
                # Add other relevant IPTC metadata fields
            }
            image_instance.add_iptc_metadata(metadata)

            return redirect('success_page')
    else:
        form = YourImageForm()

    return render(request, 'upload_image.html', {'form': form})

Links:

• https://photoseolab.com/image-license-metadata-google-images/
• https://kevinlisota.photography/2020/09/how-to-add-a-licensable-badge-to-your-images-on-google-image-search-using-lightroom/
• https://photo.stackexchange.com/questions/23151/what-is-the-best-practice-for-setting-jpeg-metadata-for-cc-by-nc-licensed-pictur
• https://iptc.org/standards/photo-metadata/quick-guide-to-iptc-photo-metadata-and-google-images/
• https://developers.google.com/search/docs/appearance/structured-data/image-license-metadata
• https://iptc.atlassian.net/wiki/spaces/PMD/pages/649592833/Reading+and+writing+IPTC+metadata+in+Python+using+pyexiftool